English translation of German description:The Philips PM5688 is a NICAM Sound Demodulator which fulfills and even surpasses the NICAM-728 standards (Near Instantaneous Companded Audio Multiplex - 728kbits/sec.).
The PM5688 performs a high-quality demodulation and NICAM-728 decoding of QPSK modulated signals on IF or Intercarrier Frequencies. A NICAM-data and clock input gives the possibility of measuring on a NICAM-728 data stream. Current information about the transmission quality expressed in EYE-height or Bit Error Rate (BER) is monitored on a display.
To display a constellation diagram or the Eye-height, an I- and Q-signal output plus a clock/2 output is available.
A digital output supplies the additional bits (A1 - A11, 11kbits/sec), the control bits (CO -C4) and CIB-information.

Please ask for the additional fee for a current and traceable ISO calibration.